Insulator.



J. W. MOORE.

INSULATOR. APPLICATION FILED APR. 6. 1912.

Patented Dec. 31, 1912.

WITNESSES:

INVENTOR e707zn #1712071;

A TTORNEW JOHN W. MOORE, 0F CAREY, OHIO.

INSULATOR.

Specification of Letters Patent.

Application filed April e, 1912. Serial No. 688,859.

To all whom it may concern:

Be it known that I, JOHN W. Moonn, residing at ,Carey. in the county ofW yandot and State of hi0, have invented a new and Improved Insulator,of which the following 1s a specification.-

Thisinvention relates to that type of insulators formed of two parts andespecially adapted for mounting electric wires and it seeks to provide asimply and inexpen sively made insulator, of two members that are exactduplicates of each other and having their coengaging faces especiallydesigned for providing a pluralityof independent grooves for seating andgripping the wires, and in which the two parts are designed forinterchangeably reversibly engaging for the easy application to the wireto be strung, and=for holding the wires positively disengaged from eachother.

With other objects in view that will hereinafter appear, my inventioncomprehends an insulator formed of two parts constructed and arranged tocoact in the manner hereinafter fully explained, specifically pointedout in the appended claim and illustrated in the accompanying drawings,in which Figure 1, is a perspective view of an insulat-or constructed inaccordance with my invention. Fig. 2, is a perspective view thereof, thetwo parts that constitute the in sulator being shown separated. Fig. 3,is a top plan viewof one of the insulator parts or sections, four wiresbeing shown as seated therein. Fig. 4, is a vertical cross section ofthe insulator taken on the line 4--4 on Fig. 1.

In the practical embodiment of my invention, the insulator body,preferably of porcelain or glass, consists of two like membersdesignated 1 and 2, and each has such dimensions and such shape so as toform a one-half part of the complete insulator, and

the said two arts are freely reversible to provide for t e requirednecessities in as sembling them for use. The complete insulator body maybe round, hexagonal, square or other shape in cross section, 'but isreferably square as shown-in the drawing.

ach of the said half sections, or members, is formed with a pair of opiositely and parallelly disposed fingers 10,0f like cross sectionalshape and of such size in plan View that they each are one-fourth of thecomplete face area of the member when of square shape, as shown. The endface of each of the fingers 10 has a wire receiving seat or groove 11that extends diagonally across the said end face and which is shaped toform a straight inner edge or shoulder 12 and a tapering bearing surface13, which, at the outer end merges with the flat end face of the fingeras indicated at 14, whereby to provide a solid bearing portion 15, thepurpose of which will presently appear. The body of'each of the saidmembers 1-2 at the base of the fingers 10 has bearing surfaces 16, andthe said surfaces are of a size and shape that form counterparts of theend faces of the fingers, and each of the said surfaces has a diagonalgroove 17 disposed at right angles to the grooves 11 inthe ends of thefingers, the said grooves also having a strai ht edge or shoulder 18 andtapering to a at bearing face 19.

Centrally the solid .part of the bod 1 has an aperture 20 the upper endof w ich is countersunk to receive the countersunk head of the holdingscrew 3 that secures the insulator to the cross arm 4:.

By reason of framing the opposing mem hers I and 2, each with a pair offingers and a pair of bearing seats,'- as stated, four distinct wireclampin and .holdin -faces are formed, each opposite pair of w 'ch arein different horizontalplanes.

By forming the wire seats or grooves, as stated and shown, the saidseats are disposed diagonally with respect to the cornersof theinsulator and have substantially triangular shape in cross section, withthe central portions of the said grooves positively closed off from thecorner edges of the body, since the fiat bearing portions of the fingerssolidly engage the like fiat bearing portions of Patented Dec. 31, 1912.i

the opposing seats, the said opposing portions acting as means forholding the wires locked against pulling out from the insulator body.

By reason of forming the fingers and the seat portions of themembersland 2, as stated, four distinct'wires can be readily supported upon andclamped by each insulator and any one of the wires can be removed or awire added to the insulator without interfering with or dropping anyother wires that may besupported thereon, since the long tapering facesof the wire seats serve to direct the wires inwardly against theshouldered edges of the grooves and thereby hold the wires already inposition on the insulator while raising the top member to insert anotherwire.

By reason of the peculiar and like construction of the two-members 1 and2, delay in selecting members or parts is avoided, as both members areinterchangeable and either may be the lower or the upper part and thesecan be quickly and positively assembled to grip and hold the wireswithout the use of the wires or other fastening devices, by simplyscrewing down the holding screw or pin into the cross arm.

What I claim is:

An insulator composed of two identically constructed interlockingmembers, each of said members including a base portion and a pair oflongitudinally projecting interlocking fingers, said fingers being ofuniform cross section from end to end and spaced apart to form the bolthole, the contacting 'faces of said base members and the ends of fingersadapted to liein contact with each other and provided with V notchesthat are spaced inwardly from the lateral extension of the bases wherebyto form laterally closed wire passages, and thereby prevent lateraldisplacement of the wires held therein, the inner walls of said notchessubstantially paralleling the bolt hole, and the outer walls of saidnotches making an acute angle with the ihner walls whereby vwhen thewires in the passages are pulled out in a-direction away from the bolthole they will wedge in said passages and conversely when the wires arepulled in a direction beyond said bolt hole they-will be loosened insaid passages to permit longitudinal pull on the wires, and amemberzpassing through said bolt hole for securing the two interlockingmembers together.

JOHN W. MOORE. Witnesses:

Orro J. Knorr, I. N. ZEIs.

